166500535 has 16 divisors (see below), whose sum is σ = 206698752. Its totient is φ = 128620800.

The previous prime is 166500527. The next prime is 166500539. The reversal of 166500535 is 535005661.

It is not a de Polignac number, because 166500535 - 2³ = 166500527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166500497 and 166500506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166500539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94765 + ... + 96505.

It is an arithmetic number, because the mean of its divisors is an integer number (12918672).

Almost surely, 2^166500535 is an apocalyptic number.

166500535 is a deficient number, since it is larger than the sum of its proper divisors (40198217).

166500535 is a wasteful number, since it uses less digits than its factorization.

166500535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 166500535 is about 12903.5086313762. The cubic root of 166500535 is about 550.1382958015.

The spelling of 166500535 in words is "one hundred sixty-six million, five hundred thousand, five hundred thirty-five".